Sidestepping the cosmological constant with football shaped extra dimensions

By S. Carroll, Monica Guica. 2003

173 citations recorded by the source corpus.

We present an exact solution for a factorizable brane-world spacetime with two extra dimensions and explicit brane sources. The compactification manifold has the topology of a two-sphere, and is stabilized by a bulk cosmological constant and magnetic flux. The geometry of the sphere is locally round except for conical singularities at the locations of two antipodal branes, deforming the sphere into an American-style football. The bulk magnetic flux needs to be fine-tuned to obtain flat geometry on the branes. Once this is done, the brane geometry is insensitive to the brane vacuum energy, which only affects the conical deficit angle of the extra dimensions. Solutions of this form provide a new arena in which to explore brane-world phenomenology and the effects of extra dimensions on the cosmological constant problem.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/ed37d12f4941496855dc266b35842f0a36a1b82e

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Citations in the corpus

Modified Gravity and Cosmology (2011, background): “Despite being extremely difficult to study, higher co-dimension braneworld models have been discussed in the literature (see, for example, [256, 316, 1250, 965, 13, 448, 449, 450, 518, 436, 669, 668, 381, 386, 388, 379, 387, 900, 12, 338, 339, 174, 280, 281, 277, 1023, 1022, 348, 349]).”
Brane-World Gravity (2004, background): “1 Supersymmetric Large Extra Dimensions (SLED) Model This is a supersymmetric version of the Einstein–Maxwell model [72] (see [57, 58, 59, 249] for reviews).”